Freida Pinto has revealed that Terrence Malick took her on a "spiritual journey" on Knight Of Cups.
The Slumdog Millionaire star remained tight-lipped about the story, but admitted that the director made her philosophise about life and existence.
"I wish I knew what to tell you, but I don't. It's one of those films," she teased.
Christian Bale, Cate Blanchett, Antonio Banderas and Natalie Portman also star in the film, which previewed some footage at the Cannes Film Festival. The movie's tagline simply says: "A man, temptations, celebrity, and excess."
The 28-year-old, who was a presenter at the fund-raising concert Sound Of Change, described the film-maker as "amazing".
"He's amazing. It was just such an absolutely amazing spiritual journey to be on," she said.
"It sounds really cuckoo when I say that, but it isn't. It isn't because it really made me think, it really made me think about what I was saying and not just for the sake of it. It's good sometimes when you're talking about things you wouldn't normally talk about like life, existence and nature."
Knight Of Cups is expected to be released later this year.